Double-acting bellows



(No Model.) I I H. KOHN.

DOUBLE ACTING BELLOWS. q Patented Aug. 27, 18891.

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N. PETERS, FholoLilhcgnphar. Washington D. C.

UNITED STATES PATENT OFFICE.

HERMAN KOHN, or SAN rnAncisoo, CALIFORNIA.

' DQU BLE -ACTING BEL'LOWS.

SPECIFICATION forming part of Letters Patent No. 409,980, dated August2'7, 1889.

Application filed November 24, 1888. Serial No. 291309. (No model.)

To all whom, it may concern:

Be it known that I, HERMAN KOHN, a subject of the Emperor of Germany,residing in the city and county of San Francisco, and State ofCalifornia, have invented certain new and useful Improvements inDouble-Acting Bellows, of which the following is a specification.

My invention has for its object to produce a double-acting bellows forblacksmiths and other purposes in the arts and trades that shall possesscertain features of power, simplicity, durability, and cheapness ofconstruction, as hereinafter fully set forth. This ob ject I accomplishby means of the construction illustrated in the accompanying drawings,in Which Figure 1 is a front elevation of my bellows set up foroperation. Fig. 2 is avertical sec tion taken longitudinally through theparts. Fig.3 is an end view taken from the righthand end of Fig. 1. Fig.4 is a top view in detail of one of the guide-rollers and a portion ofthe fixed rail on which it travels.

The same letters of reference are used to denote corresponding parts inthe several views.

The frame consists of side pieces A and end pieces A within which themain bellows B is fixed, while on the top is arranged an expansiblereceiving-chamber O, having communication with the bellows B through apassage and aperture D at each end. These lead out at the heads A of theframe between which the bellows is set, and contain the upwardlyaetingvalves E E, arranged to control the inlets into the chamber 0 above.

The bellows Bis of the do uble-act-ing kind that is, it operates to takein air at one side and force air out at the other side at every stroke,so that loss of time during the return frame is a horizontal guide-railG, with a channel for the wheel to travel in, and beneath the rails onsuitable supports furnished by crossbeams A at the bottom of the frame arockshaft- H is set to one side of the center and with a fixed arm I'Ion each end. To these compressed and the other distended at each stroke,and the lever K thus acts to force air' into the chamber above ineitherdirection of its movement. The passages ortrunksD lead out from thefixed heads and enter at the bottom of the box (J, which projects beyondthe frame at the endsfor this purpose, and from this box at one end theconductorL also leads to carry and deliver the air to any point forservice. A valve M is provided in this conductor to shut off and tocontrol, as well, the supply of air. Above this box portion the chamberis formed of the expansible section C the two constituting anexpansiblereceiver, that is also capable ofojperatihg as an I accumulator bysuitably weighting thetop. The air-inlets N, controlled withsuitably-acting valves, are formed in each fixed head of the bellows B,as shown in Figs. 2 and 3. By this construction I produce a powerful aswell as a strong and durable bellows, that will be found to worksmoothly and furnislran even blast with a comparatively small ex.-pendit-ure of power. 1 p

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is

l. The herein-described bellows, consisting of the two suction and forcecompartments placed end to endand separated by an imperforate movablepartition, the fixed heads.

having valved inlets for air from the outside,

and air-passages controlled by valves to deliver air into a commonreceiving-chamber,

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above which said chamber is adapted to form an expansible receiver, anda rock-shaft provided With an operating-lever connected, substantiallyas described, to the said partition.

2. The combination, With the double-acting bellows, of the rock-shaft H,provided with the operating-lever K, and having fixed arms H H themovablehead-board B having the fixed studs F F, which are mounted onWheels or rollers f, the links I, connecting the fixed arms IF, and thestuds F, and the guide-rails to G G, substantially as described.

In testimony that I claim the foregoing I have hereunto set my hand andseal.

HERMAN KOHN. [L.

WVitnesses:

EDWARD E. OsBoRN, OTIS V. SAWYER.

